adw -- Advansys PCI 16bit SCSI Host adapter driver
For one or more SCSI busses:
This driver provides access to the 16bit SCSI bus connected to the
Advanced Systems Products, Inc. ASC3550 Ultra, and ASC38C0800 Ultra2,
SCSI Host Adapter chips. AdvanSys products incorporating these chips
include the ABP940UW, ABP950UW, ABP970UW, ABP3940U2W, and ABP3950U2W.
Both chips support, synchronous transfers (20MHz and 40MHz max respectively),
16bit transfers, tagged queueing, and up to 253 concurrent SCSI
Per target configuration performed in the AdvanceWare menu, which is
accessible at boot, is honored by this driver. This includes synchronous/asynchronous
transfers, maximum synchronous negotiation rate, wide
transfers, disconnection, tagged queueing, and the host adapter's SCSI
ID. The global setting for the maximum number of tagged transactions
allowed per target is not honored as the CAM SCSI system will automatically
determine the maximum number of tags a device can receive as well
as guarantee fair resource allocation among devices.
adv(4), cd(4), da(4), sa(4), scsi(4)
The adw driver was ported by Justin T. Gibbs from the Linux driver written
by Bob Frey of Advanced System Products, Inc. Many thanks to AdvanSys
for providing the original driver under a suitable license for use in
The adw driver appeared in FreeBSD 3.0.
FreeBSD 5.2.1 February 13, 2000 FreeBSD 5.2.1 [ Back ]